using programming port as I/O

[hesc_1314511]

Hello,

can I use the programming port, for example of CY8C4146AXI-S453, as I/O?

Thanks

Henry

[Bob_Marlowe]

Yes, you may. Just take care that the connected hardware does not go wild during the programming.

Setup: In Creator system view change the "Debug select" to GPIO.

Programming can be done using Kitprog or Miniprog.

Bob

[MotooTanaka · Accepted solution]

Hi,

To visualize what Bob-san taught us a little, I made a sample project

schematic

When I see Pins in DWR (Design Wide Resources)

P3[2] and P3[3] are used for SWD

So I access System in the Design Wide Resources in the Workspace Explorer

When I double clicked "System"

Then click "v" in the right of Debug Select. (Default is SWD (serial wire debug)) to change the mode to GPIO

Now Debug Select is GPIO

When I accessed the Pins again, the reservation if P3[2] and P3[3] are cleared

So we can assign GPIO to these pins

main.c

=================

#include "project.h"

#define LED_ON  0u

#define LED_OFF 1u

#define SW_ON   0u

#define SW_OFF  1u

int main(void)

{

    CyGlobalIntEnable; /* Enable global interrupts. */

    for(;;)

    {

        if (SW_Read() == SW_ON) {

            LED_Write(LED_ON) ;

        } else {

            LED_Write(LED_OFF) ;

        }

    }

}

=================

Note: Needless to say, with this configuration we can program the device

but we can not use debugger.

moto